$EGID

$; The subscript separator for multidimensional array emulation. If you refer to a hash element as

HANDLE->autoflush( EXPR )

${^RE_DEBUG_FLAGS} The current value of the regex debugging flags. Set to 0 for no debug output even when the re

$, The output field separator for the print operator. If defined, this value is printed between each of print's arguments. Default is

%ENV The hash %ENV contains your current environment. Setting a value in

$PROGRAM_NAME

%OS_ERROR

$FORMAT_NAME

$UID